1. For a given page, calculate the probability that there are at least 2 mutations on the page. 2. For a given page, calculate the probability that there are at least 2 mutations on the page given that you have already spotted one mutation. 3. Now consider three pages, calculate the probability that there are no more than 2 mutations over all three of those pages.

step-by-step explanation:

i have done this all on a piece of paper but idk how to put it on here cuz it needs to be drawn

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.